Heating device



Cross reference is made to copending U.S. design patent application Ser. No. 29/606,416 entitled “Heating Device” by Fritz et al. filed on even date herewith; U.S. design patent application Ser. No. 29/606,417 entitled “Heating Device” by Fritz et al. filed on even date herewith; and U.S. design patent application Ser. No. 29/606,420 entitled “Heating Device” by Fritz et al. filed on even date herewith.

FIG. 1 is a perspective view of a heating device showing our new design;

FIG. 2 is a front elevational view of the heating device of FIG. 1;

FIG. 3 is a rear elevational view of the heating device of FIG. 1;

FIG. 4 is a left side elevational view of the heating device of FIG. 1;

FIG. 5 is a right side elevational view of the heating device of FIG. 1;

FIG. 6 is a top plan view of the heating device of FIG. 1; and,

FIG. 7 is a bottom plan view of the heating device of FIG. 1. 

CLAIM The ornamental design for a heating device, as shown and described. 